312.40. Hoisting of a stage: A stage must be hoisted using a crane, boom truck or device designed for lifting a worker according to the following conditions:
(1) the crane or boom truck must comply with the requirements in subparagraphs d and e of paragraph 2 and paragraph 4 of section 3.10.7 of the Safety Code for the construction industry (chapter S-2.1, r. 4); and
(2) the device designed for lifting a worker must
(a) comply with the requirements in paragraph 1 of section 3.10.7 of the Safety Code for the construction industry; and
(b) be the subject of drawings, including the installation and disassembly processes, signed and sealed by an engineer and available at the diving station.
The crane, boom truck or device referred to in the first paragraph must be available at all times to move divers. The crane, boom truck or device may not be used for other purposes while divers are still in the water.
Only dive team members may give instructions to the operator of the crane, boom truck or device referred to in the first paragraph. The operator must be linked to the dive team members’ 2-way voice communication system when such a system is required.